a
Octal, RS-232/RS-423 Line Receiver
ADM5180
FUNCTIO NAL BLO CK D IAGRAM
FEATURES
Eight Differential Line Receivers in One Package
Meets EIA Standard EIA-232E, 423A, 422A and
CCITT V.10, V.11, V.28
ADM5180
Single +5 V Supply
Differential Inputs Withstand ±25 V
Internal Hysteresis
A–
A+
A
A
B
C
D
O
O
Low Pow er CMOS –3.5 m A Supply Current
TTL/ CMOS Com patible Outputs
Available in 28-Pin DIP and PLCC Packages
Low Pow er Replacem ent for UC5180C/ NE5180
B–
B+
B
C–
APPLICATIONS
C
D
O
O
C+
High Speed Com m unication
Com puter I-O Ports
Peripherals
High Speed Modem s
Printers
D–
D+
FS1
FS2
E–
Logic Level Translation
E
E
F
GENERAL D ESCRIP TIO N
O
E+
T he ADM5180 is an octal differential line receiver suitable for a
wide range of digital communication systems with data rates up to
200 kB/s. Input signals conforming to EIA Standards 232-E, 422A
and CCIT T V.10, V.11, V.28, X.26, and X.27 are accepted and
translated into T T L /CMOS output signal levels.
F–
F+
F
O
G–
G+
T he ADM5180 is a superior upgrade for the UC5180C and the
NE5180. It is fabricated on an advanced BiCMOS process,
allowing high speed bipolar circuitry to be combined with low
power CMOS. T his minimizes the power consumption to less than
25 mW.
G
G
H
O
H–
H+
H
O
A failsafe function ensures a known output state under a variety of
input fault conditions as defined in RS-422A and RS-423A. T he
failsafe function is controlled by FS1 and FS2. Each controls four
receivers. With FS = Low and a fault condition the output is forced
low while if FS = High, the output is forced high.
Truth Table
D ifferential Input
(+) - (–)
Failsafe Input
FS1, FS2
Receiver
Logic O utput
T he device is available in both 28-pin DIP and 28-lead PLCC
packages.
>200 mV
<–200 mV
O/C
S/C
O/C
X
X
L
L
H
H
H
L
L
L
H
H
S/C
REV. 0
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood. MA 02062-9106, U.S.A.
Tel: 617/ 329-4700 Fax: 617/ 326-8703